Process of making metallic screening material



(No Model.)

3. F. GO'LDI NG. PROCESS OF MAKING METALLIC SCREENING MATERIAL. No.320,240. Patented June 16,1885.

WITNESSES NVEJVT R N, PETERS. PhMD-Lilhfltnphen Wmlhingtnn. D.C.

UNITED STATES PATENT OFFICE.

JOHN F. G OLDING, OF CHICAGO, ILLINOIS.

PROCESS OF MAKING METALLIC SCREENING MATERIAL.

EPECIPICATION forming part of Letters Patent No. 320,240, dat June18.85-

Application filed December 13, 1883. (No model.)

To all whom it may concern: a

Be it known that I, JOHN F. GOLDING, a citizen of the United States,residing in the city of Chicago, in the State of Illinois, have inventeda new and useful Process for Making Metallic Meshed or ScreeningMaterial, of which the following is a specification.

Figure l is a view of the material cut or slashed ready for forming themeshes. Fig. 2 is a view of the metal after the meshes are formed. Fig.3 is an end view of Fig. 1, showing the slashed metal before the meshesare formed.

I take a piece of metal and make a series of rows of incisionsthroughout it, and between the ends of these incisions I leave uncutspaces, these incisions or cuts being so arranged that the uncut spaceswill be at or about midway of the adjoining cuts, and thus the incisionsor cuts and the uncut spaces are made to alternate throughout the sheet,the uncut spaces connecting the strands one'with another, and the wholeremaining in one piece, as is shown in Fig. 1. The metal thus preparedis opened at the slits by causing the cut edges to be passed by eachother all in the same direction, and away from the original plane of themetal a sufficient distance to produce the desired size of mesh, theends of each strand being bent in opposite directions at or near theuncut spaces suiiiciently to set the metal and maintain the mesh, as isshown in Fig. 2. The metal is eX- panded so that the strands and uncutspaces have their greatest movement in the direct-ion of or near a rightangle to the original plane of the metal, and a less movement of theends toward the center, the strands and uncut spaces having a base inthe aggregate equal in width but shorter than the'piece from which theyare cut.

I 1. In the art of making screening from slashed metallic plates orsheets, the improvement of bending the strands flatwise, line after lineof strands successively, in forming the meshes, and setting the strands,substantially as before set forth, so that the strands will be disposededgewise in the thickness of the finished screening.

2. The process herein shown for making 5 slashed metallic screening,which consists as follows: making a series of rows of incisions or cutsthroughout the metal, and between these incisions or cuts leaving uncutspaces, each uncut space being alongside of and be- 51 tween twoincisions or cuts, and at or near the center of said cuts, the incisionsor cuts of each row of incisions or cuts made to alternate with theuncut spaces throughout the entire piece of metal, opening the incisionsor cuts in a 6( manner to cause the cut edges to be passed by each otherall in the same direction perpendicular to the original plane of themetal, thus bending each strand in opposite directions at points at ornear the uncut spaces sufficientb to set the metal and maintain themesh, th metal being so expanded that the several strands have theirgreatest extension in the direction of or near a right angle to theoriginal plane of the metal, and a less movement of 7c the ends towardthe center, thus expanding the metal into a mesh.

JOHN F. GOLDING.

\Vitnesses:

P. P. AYER, J. S. SALISBURY.

